Scientific Investigation
A potential answer to a question that can be tested by gathering information
Hypothesis
Change in position
Motion
A push or pull acting on an object
Force
Tendency of an object to resist a change in its motion
Inertia
Magnetism produced by an electric current
Electromagnetism
The factor that is changed, or manipulated, by a researcher in a scientific experiment
Independent Variable
(Manipulated Variable)
The formula for calculating speed (also the unit for speed)
Distance / Time
The overall force acting on an object that takes into account all of the individual forces acting on the object
Net Force
An object’s motion will not change unless an unbalanced force acts on the object. Also called "The Law of Inertia"
Newtons 1st Law
Device that uses an electromagnet to change electrical energy to kinetic energy
Electric Motor
A broad explanation that is widely accepted because it is supported by a great deal of evidence
Scientific Theory
A measure of both speed and direction of motion
Velocity
SI unit for force - Name and units
equal to the amount of force that causes a mass of 1 kilogram to accelerate at 1 m/s2
(kg • m/s2)
Define Newtons 2nd Law and give the equation for it
The acceleration of an object equals the net force acting on the object divided by the object’s mass
Force = Mass x Acceleration
Coil of wire with electric current flowing through it, giving it a magnetic field like a bar magnet
Solenoid
Predicting what the observations should be if a theory were correct. We go from the general — the theory — to the specific — the observations
Deduction
A measure of the change in velocity of a moving object
Acceleration
The force that opposes motion between two surfaces that are touching
Friction
Property of a moving object that makes it hard to stop
= object’s mass X velocity
Momentum
This simple rule makes it easy to find the direction of the magnetic field created by a current flowing through a wire. Name and explain.
Right Hand Rule
When the thumb of the right hand is pointing in the same direction as the current, the fingers of the right hand curl around the wire in the direction of the magnetic field.
Getting the same results when an investigation is repeated
Replication
The slope, or steepness, of a distant-time graph represents this.
Speed
Name and explain 2 of the 4 types of Friction
Static
Sliding
Rolling
Fluid
Newtons 3rd Law
Every action has an equal and opposite reaction
Name 2 of the 3 ways you can increase the strength of an electromagnet
add more turns of wire in the coil
increase the current (larger battery)
use a bigger iron bar (nail)